Went to DC last month to visit good friends. While there we visited the newly opened and renovated Air and Space Museum. It was very impressive. It is difficult to believe that the Wright Bothers invented the first airplane a little over 120 years ago and how much has been accomplished since then. The future seems boundless. There’s lots to see in this massive space (which is now only half open) but we spent most of our time viewing the first moon landing and examining their gear, their supplies, their food and medications. Timed tickets are required but it is free. Highly recommend.